Made of keratin - the same material as fingernails - the sheath reveals that the claw itself was much longer than the underlying bones. It is the largest claw of its kind found fully preserved in this ...

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Two claws, they note, would have made each claw stronger than if there were three, allowing the dinosaur to grab thicker branches.

Made of keratin (the same material as fingernails), the sheath reveals that the claw itself was much longer than the underlying bones. It is the largest claw of its kind found fully preserved in ...

A new species of dinosaur found at a Mongolian building site has the largest fully preserved claw ever found. The bipedal, herbivorous animal had only two fingers on each hand, which it may have ...